Safety filter element



FIG. 1 is a top plan view of a safety filter element embodying our new design;

FIG. 2 is a bottom plan view of the safety filter element depicted in FIG. 1;

FIG. 3 is a front side elevational view of the safety filter element depicted in FIG. 1;

FIG. 4 is a back side elevational view of the safety filter element depicted in FIG. 4;

FIG. 5 is a left side elevational view of the safety filter element depicted in FIG. 1; and,

FIG. 6 is a right side elevational view of the safety filter element depicted in FIG. 1. 

The ornamental design for safety filter element, as shown and described. 